Anti-theism is just as much of a “religion” as any kind of statist Christianity or Islam or anything else. All of it can and has been used to commit atrocities.
None of this changes what Jesus taught us and the wisdom that is contained in his teaching.
God’s natural law is the basis for all human thought and advancement, from Plato’s cave to Christ’s Gospel, to the Magna Carta, to the declaration of independence, these teachings have built upon the foundation for Human Liberty.